Inside Lens Cover, Compatible with Brand Optrel (R), Compatible with Manufacturer Model Number e640, Compatible with Series Sphere Series, Features Inside Cover Lens for 640 Helmet, For Use With 1006.400, Lens Color Clear, Magnification No, Plate Length 4 1/4 in, Plate Thickness 0.25 in, Plate Width 2 in, Standards CE, ANSI, EAC, AS/NZS, complies withCSA Z 94.3, Welding Shade Designation W10, Package Quantity 5. This item has been restricted from sale in the following state (s): []